Phobia
Lesterson observed that an examiner, actually the Second Doctor had a phobia regarding the Daleks. (TV: The Power of the Daleks)
Phobias
Agoraphobia was the fear of open spaces and the outside. (PROSE: The Algebra of Ice)
Ailurophobia was the fear of felines. (AUDIO: Nevermore)
Anachrophobia was a fear of temporal displacement. (PROSE: Anachrophobia)
Aquaphobia was the fear of water. (AUDIO: House of Blue Fire)
Arachnophobia was the fear of spiders. (PROSE: The Scarlet Empress)
Athazagoraphobia was the fear of being forgotten or ignored. (AUDIO: House of Blue Fire)
Blattodephobia was the fear of cockroaches. (AUDIO: House of Blue Fire)
Catoptrophobia was the fear of mirrors, of seeing one's reflection. (AUDIO: House of Blue Fire)
Chocophobia was the fear of chocolate. (AUDIO: Memory Lane)
Claustrophobia was the fear of enclosed spaces. (TV: Detained)
Coulrophobia was the fear of clowns. (TV: The Day of the Clown)
Haemophobia was the fear of blood. (TV: The Girl Who Died)
Pantophobia was the fear of everything. (TV: Night Terrors)
Technophobia was the fear of advanced technology. (AUDIO: Technophobia)
Teleportaphobia was a fear of of near-instant transport methods such as teleportation, transmat and T-Mat. (PROSE: Down)
Triskaidekaphobia was a fear of the number 13. (COMIC: A Confusion of Angels)
Xenophobia was, as Ian Chesterton put it, a "dislike for the unlike". (TV: "The Ambush") Cymrophobia was a form of xenophobia against Welsh people. (AUDIO: Superiority Complex)
Larles had a phobia of squirrels, which she did not name. (PROSE: Ring Theory)